Picture of cigarette smoke

does someone know a link where I can find a picture of a smoking cigarette where I can see the transition from laminar to turbulent flow regime. I have to illustrate the difference between laminar and turbulent flow to non-technicians and I think that would be a nice example.

This is a water table experiment with a (subcritical) transition to turbulence. Basically, the flow of water becomes unstable as it passes over an obstacle and turbulence develops only downstream from the object, the rest of the flow stays laminar. It is a nice picture, similar to the flow of water in a river bed with rocks. The photocopy of the pictures come out fine too.